<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
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  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
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<body>
  <script>
    while (true) {
      let str = prompt('你爱我吗')
      // 退出条件 爱
      if (str === '爱') {
        break
      }
    }
  </script>
</body>

</html>